Journal for Research in Mathematics Education (1992) Vol. 23, No. 1

ISSN 0021-825 1 JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION VOLUME 23 NUMBER 1 JANUARY 1992 National Council of Teachers of Mathematics The journal for R~search in Math~matics Education, an official journal of the National Council of Teachers of Mathematics. 1> devoted to the interests of teacher~ of mathematics and

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